Metal-pot-mouthpiece wiper



S. E. SPRRY METAL POT MOUTHPIECE WIPER Filed Dec. v. 1925 2 Sh'eetssneen 1 Dec; 27', T92 7'.

S. SPRRY METAL POT MOU'IHPIEGE WIPER Filed DeoQv. 19245 2 sheets-sheet 2 Patented Dec. 27, 1927.

unire! Simfree Partnr: ortica?.

METL-POTLMOTHPIECE Wirtin? Application iiied'iiecembe'r f The present' invention relates to improve` ments in typographical machines, and'f'in'ore especiallyto-thosev of the'cla'ss' shown and*v embodies a metal pot having-da` mouthpiece which is ymovable, with "the metal pot; vinto contact'with the rea-r face -of the"iiioldtoL close'A the mold Vat the rearA preparatory to fthe injecting of' type'v metallinto' the `-frno`1d forE the casting: of `the* type bars vor slugs*j thereinL The primarybbjectof this inventionis to i providea novelA and'improvednwiper for the" metal pot mouthpiece whichiscal'aable-offl thoroughly and' effectively.` removing any' molten" type metalv orfol'eign mattertliat may adhere to the Imold'-engaging `face of the mouthpiece after each castings operation has-- been 5 performed',` :thereby insuringz. a' metalA tight `joint betweenfthe rear face 'of rthe moldl and Athe metal potvv mouthpiece during leach casting. operationg'. and the productioir' of` more perfect type bars or slugs. y

Wip ers *have been usedA for such purposes;

but suchwipers have been unsatisfactory =b.er cause', among other reasons,theyhavebeen ',operably secured to the-'machine' frame, `the mold dislr, or to some other' coinponent'oflthe l ina-chine which is separate fifom'lthe` metal pot Vand betweenfwhich componentafand the.

metall pot there is relative l operating.-v 4move- `ment' or adjustment inconsequence'of which* the operative relationship bet'w'een'the metal pot mouthpiece l'and the portionof the wiper@ which cooperates with-it was disturbedywithf the result, that the wiping-actionwas inete cient 'or imperfect. f-

and; the` wiper mechanisnn' because the v"wiper isgsupportedyby the ymetal pot and moves the proper operatingl relationshipvv between the mouthpiece and theportion of the wiperr which cooperates with it.

The invention has been illustrated,in its; preferred embodiment7 in the accomp'anying` drawing, wherein 7, 192:5." senti Nt.' *raf/ziny that lportion of aline casting fn'iachine 'which includes themetal pot* and some/of 'the adj ac ent elements of the' machine, fshowingithewiperfembo'dying they present inventiony apa plied thereto;4

Fig; Qis afragmental side elevation ofthey parts showny in` Fig. las viewed-'from-'fthe1 left -of said figure, the mold wheel lbeing shown in dotted' lines;

Fig: ySisa detail perspective view'ofthe-v wiper arii'i-fdetached*fromfithefmetal pjot";' and" Fig. 4 'is a detail lview'of-portions of the washer interposed betweenthese elements." f Tlie'iiresent invention is applicable general'ly to the casting XKmechanisms: of line casting: machines which employ a n'loldfin which type vbars or slugs are cast andametal pot' havingf a "mouthpiece tofcontact with a face" of the mold toi closeit andfto inject `type 'metalfiiitoY the-moldcavity,l and the purpose of the'l invention is to provide an improved' wiper which will remove from 1 any part'ofthe mold-engagingcface of the metal-pot mouthpiece any molten typemetal thatv `may 'adhere thereto' after? al castingop eration, andthus avoid ythe accumulation gof` solidified type metal* which',':if Vpresent on the mold-engaging face-of the-metal pot mouthpiece, would preclude` anfr accurate metal tight fit' between ythe mouthpiece and the Vcooperativeface lof the mold.-

inthepresent instance, l represents a'por-` tionf'of `thesp'out ofthe metal pot 2 of castLJ ingr mechanism, and this metal'- pot'niaydoe"y of the type" generalllyuse'cl 'in'machines fof* the class-generally shown and' describe'dfirrl the patenthereinbefore referred'to, it 'being-u lusually ymountedon a shaft-B so that 'it may swing forwardlypreparatory to'a castingoperationf=and recede rearwardly after "each castha'sA been'made, and is 'fitted with a y mouthpiece 4, the forwardfface of which is adaptedfto move into engagement with and metal pot?l and wiper" member-f showing atoform a metali-tightffit -with the rear face' y l offthe-n'ioldy 5 carried by= a lmold wheel 6 therewith, thereby insuring maintenance fof:

wheiithe metal 1pot moves forwardly, the metalfpot'fbeing swung forwardly to brin'gil the mouthpiece into engagement with the mold 'and reti'nactedtherefrom at 'appropriate intervals by mechanism which is welllmown to those skilledV in the 'artf T-lie'metal y pot'niouthpiece has` the usual-orany suit- Fig; l isaA'fragmental front- Velevation-of able" orifices 7 through which molten` type metal contained in the metal pot is forced, usually by a pump or plunger, into the cavity of the mold in which the type bar or slug is to be cast. The metal pot and its mouthpiece and the mold and mold wheel may be constructed and operated in Vthe manner usual in machines of this general class.

The wiper forming the subJect of the presyent invention serves to prevent accun'iulaby means of a pin or stud 10 which is secured to and supported by the metal pot jacket. The long arm 11 of the bell crank is offset intermediate its ends, as indicated at 12, so that its outer end will normally be positioned approximately in a verticalplane which substantially coincides with the mold- `engaging face of the mouthpiece el.. A wiping medium or pad 13 is secured to the rear or inner face of the outer end of the arm 11. 'lhis wiping medium or pad may be for-med of any suitable wiping material such as felt, fabric, asbestos, or the like, and the wiper is so positioned and pivoted as to cause the wiping medium or pad to engage and traverse the mold engaging face of the mouthpiece when the wiping member is swung about its pivot or fulcrum.

In order to insure firm but yielding engagement of the Wiper medium or pad 13 with the mold-engaging face of the mouthpiece, a helical spring 14l is positioned on the stud 10 which is suitably elongated for the purpose, and one end of this spring presses against the washer 15, which is mounted on the stud and held in position thereon by a cotter pin 16 or other suitable securing device; while the inner end of the spring applies pressure against the pivoted portion of the wiper member. The rear face of this portion of the wiper member has a flat portion which movably bears against the flat front surface face 9 of the metal pot jacket, whereby the wiper'n'iember is guided to travel in a given vertical plane which is parallel to the mold-engaging face of the mouthpiece. lf preferred, a fiat bearing washer 9, shown in Fig. Ll, may be interposed between the front face of the metal pot and the adjacent face of the wiper member.

The wiper member 8 has a relatively short arm 17 which extends from its pivoted portion and this arm is pivotally connected at 18 to the upper end of a link 19. The lower end of the link 19 is pivotally connected at 20, to an actuating arm 21. 1t has been found that the operations of the usual space band lever 22 commonly used in machines of this class 'takes place at such times that this space band lever may be utilized as the actuating means for the wiper. The actuating arm 21 may, therefore, be formed as an integral extension of the usual space band lever, or, if preferred, it may be formed as a separate part and then rigidly secured to the fulcrum sleeve of the space band lever in any suitable manner, the space band lever being fulcrumed to the frame of the machine in the usual way, as indicated at 23 and actuated by the usual power mechanism.

1n operation, after theslug has been cast the metal pot recedes rearwardly, thereby disengaging the mouthpiece from the mold, after which the space band lever moves about its fulcrum to perform functions well understood by those familiar with machines of this class. As the space band lever swings about its fulcrum 23, the arm 21 which swings therewith, acts through the link 19 to impart a swinging movement to the wiper member 8. During this movement of the wiper member, its wiping pad traverses the moldengaging face of the metal pot and thereby removes any molten metal or foreign matter that may have adhered to this face; thereby insuring a smooth, clean face for engaging the mold during the next casting operation. i

During each cycle of operation ofthe casting machine, the' space band lever moves to the position indicated by dotted lines in Fig. 1 and then returns to its normal position, as indicated in full lines, thereby causing the wiper to move firstto the right across the mouthpiece to the position indicated by the dotted lines, and then back to the left into the position indicated in full lines in Fig. 1. 1n this position the wiping pad carried by the wiping arm is beyond the mouthpiece, thus permitting unobstructed engagement of the mouthpiece with the mold. The connections between the components of the wiper operating mechanism are suiCiently flexible to permit the movements of the metal pot to and from casting position, the location of the connection Q0 near the pivotal axis of the metal pot moreover requiring movement substantially of only the upper portion of the link 19 to compensate for the movements of the metal pot.

The wiperwhen constructed substantially as shown, is capable of being accommodated in the space available in machines of this class between the front of the metal pot and the mold wheel, and the range of motion of the wiper member in performing its wiping operations is such that the upper or wiping end of this member may operate Within the usual rearwardly-projecting rim of the mold wheel, without interference by or with the mold wheel.

I claim es my invention l. In a line casting machine, the combination ol a metal pot pivoted to swing its metal injecting mouthpiece to and from contact with the mold, an actuating arm eX- tending into proximity to the pivotal axis ot' the metal pot, a wiper arm pivotally mounted on the metal pot having a wiping` portion arranged to traverse the mouthpiece thereof, and a link pivotally connecting the wiper arm to said actuating arm and operative to swing the wiper arm to and fro across the metal pot mouthpiece.

2. In a line casting machine, the combina tion with a metal pot movable to carry the metal injecting mouthpiece thereof to and from contact with the mold, and a pivoted space-band lever, of a'wiper arm pivotally mounted on the metal pot to move therewith 4 and having a wiping portion arranged to traverse the mouthpiece thereof, an actuating arm connected to the space-band lever to swing in Aunison therewith and projecting from its pivot,l and a link connecting said actuating arm to the wiper arm and operative to Swing the latter to and Jfro across the mouthpiece of the metal pot immediately following each casting operation.

In testimony whereof I have hereunto set my hand.

SAMUEL E. SPERRY. 

